Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.
Chesapeake Energy Corp. on Friday agreed to pay $7.5 million to settle a class-action lawsuit in U.S. District Court over royalty payments in the Marcellus shale of Pennsylvania, says NPR's StateImpact Pennsylvania.
The energy giant was sued by 14 Pennsylvania and New York leaseolders unhappy that Chesapeake had reduced royalty payments because of certain post-production costs like pipelines and compressor stations.
The settlement is expected to impact several thousand Pennsylvania landowners whose leases prohibit such deductions.
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